Awesome. Your library is far better. Thanks for replying! Dexter
On Friday, May 4, 2018 at 4:09:53 PM UTC-4, Alexis King wrote: > Your composex macro is very similar to the various forms from the (as far > as I can tell) fairly well-known threading package: > > http://docs.racket-lang.org/threading/index.html > > Disclaimer: I am the author of the threading package. > > In any case, there are some differences, but it has the same general feel, > and it might suit your needs. > > Alexis > > > On May 4, 2018, at 14:57, dexte...@gmail.com <javascript:> wrote: > > > > Hi there, > > > > This is my first post, pardon my ignorance. I have been using a > homemade macro to compose functions together, but still allow semi-currying > of functions (with lambdas) to keep control of the parameters : > > > > (define-syntax (composex stx) > > ; macro to compose functions passing an 'x' parameter > > (syntax-case stx () > > ((_ f1 ...) > > (with-syntax ([x-var (datum->syntax stx 'x)]) > > #'(compose1 (λ (x-var) f1) ...))))) > > ; unit test > > (check-equal? ((composex (string-replace x " " "-") > > (string-downcase x) > > (string-trim x)) "Hello World") > > "hello-world") > > > > > > I often use this or (apply composex (reverse v)) to keep function > applications in order. > > > > Can you comment on this? Do you think this could be part of the > language? > > > > Cheers, > > > > Dexter > > > > P.S. For use in the wild, see provide-generator. Makes generate-provide > more readable : > > https://github.com/DexterLagan/provide-generator > > -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
